43722 has 24 divisors (see below), whose sum is σ = 108576. Its totient is φ = 12456.

The previous prime is 43721. The next prime is 43753. The reversal of 43722 is 22734.

It is a happy number.

43722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×43722² = 3823226568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 43695 and 43704.

It is not an unprimeable number, because it can be changed into a prime (43721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48 + ... + 299.

It is an arithmetic number, because the mean of its divisors is an integer number (4524).

2⁴³⁷²² is an apocalyptic number.

43722 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

43722 is an abundant number, since it is smaller than the sum of its proper divisors (64854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54288).

43722 is a wasteful number, since it uses less digits than its factorization.

43722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 359 counting only the distinct ones).

The product of its digits is 336, while the sum is 18.

The square root of 43722 is about 209.0980631187. The cubic root of 43722 is about 35.2289749375.

The spelling of 43722 in words is "forty-three thousand, seven hundred twenty-two", and thus it is an iban number.